Mobile moulds for the construction of buildings and similar structures



C. C. FOGG AL MOBILE MOULDS FOR THE STRUCTION OF BUILDINGS AND SIMILAR STRUCTURES May 15, 1956 4 SheetsSheet l Filed Aug. 6 1951 May 15, 1956 C. c. FOGG ET AL 2,745,166

MOBILE MOULDS FOR THE CONSTRUCTION OF BUILDINGS AND SIMILAR STRUCTURES Filed Aug. 6, 1951 4 Sheets-Sheet 2 404 727 C 1 4%.; &

2,745,166 CTION OF TURES OG G ET R THE co SIMILAR 1 m 8 N I mm M 6 5 9 1 5 1 M 4 Sheets-Sheet 3 Filed Aug. 6, 1951 m u an /017p 4 #432042 May 15, 1956 c. c. FOGG ET AL 2,745,166

MOBILE MOULDS FOR THE CONSTRUCTION OF BUILDINGS AND SIMILAR STRUCTURES Filed Aug. 6, 1951 4 Sheets-Sheet 4 United States Patento MOBILE MOULDS FOR THE CONSTRUCTION OF BUILDINGS AND SIMILAR STRUCTURES Clilford Cyril Fogg and Harold Patrick Sinclair, Armadale, Victoria, Australia Application August 6, 1951, Serial No. 240,574 Claims priority, application Australia August 18, 1950 9 Claims. (Cl. 25-131) The present invention relates to mobile moulds for the construction of buildings or the like stiuctures from concrete or similar material, and particularly to moulds of the type in which the walls of the building are constmcted section by sectionand course by course.

Hitherto, moulds of the foregoing character have not been entirely satisfactory. For example, many types of moulds are not suitable for the construction of cavity walls. When provision is made for the moulding of cavity walls the moulds have been unduly complicated and difiicult to' manipulate. They are also relatively expensive to manufacture.

It is the primary object of the present invention to provide a mould which is particularly suitable for the construction of walls of buildings, including cavity walls, in an expeditious manner without undue difficulty.

It is a further object of the invention to provide a mould which can be manufactured and made available to the public at relatively low cost.

The mobile mould according to the invention comprises at least one pair of plates or forms between which a section of a wall may be moulded, and manually operable contracting and retracting means for adjustably retaining the plates in spaced relationship whereby the plates or forms may be contracted for moulding a section of a course and retracted to permit the mould to be Withdrawn after the completion of the moulding operation. In its preferred form the mobile mould includes a pair of outer plates or forms and a pair of inner plates or forms which are ganged together so that a cavity Wall can be constructed. An outer plate and the adjacent inner plate are removable to permit a single wall to be moulded between the remaining plates whilst an outer plate is removable to permit a cavity party wall to be moulded.

In order that the invention may be readily understood reference is made to the accompanying drawings in which:

Fig. 1 is a perspective view of a mobile mould according to one practical embodiment of the invention;

Fig. 2 is a view showing part of a wall which has been constructed with the mould of Fig. 1;

Fig. 3 is a side elevation of part of the mould with one outer plate removed;

Fig; 4 is a sectional view of the mould of Fig. 1 showing the construction of the manually operable contracting and retracting means for adjustably retaining 10, and 9 and 11, are adjustably retained in spaced relationship by manually operable contracting and retract: ing means such as the transverse supports 12 and 13.

One part 14 of a twin wall, such as the cavity wall of Fig. 2 may be moulded between an outer plate 8 and the adjacent inner plate It) whilst the other part 15 of the wall may be moulded between the other outer plate 9 and the adjacent inner plate 11. The space between the inner plates forms the Wall cavity. 7

As shown more particularly in Fig. 4 each transverse support comprises an inner sleeve 17 and an outer sleeve 19. The outer sleeve includes two sections 19a and 1% which surrounds the inner sleeve 17.

Secured to the outer sleeve at suitable positions thereon by set screws 20 are a plurality of collars or the like 21 to which the plates 8,. 9, 10 and 11 are attached by means of brackets 21a. To permit the distance between the plates 8 and 10 and 9 and 11 to be varied'so as to contract and retract the mould, the inner and outersleeves are operatively connected together by means "of a plurality of left-handed and right-handed screw threads 22 and 22a formed on the sleeve 17 which engage corresponding threads on the sections 19aand 19b of the outer sleeve 19. operating levers 23 are secured to the ends of the sleeves 17 by clamping bolts 24. By turning the operating levers 23 the inner sleevesare turned thus causing the sections 1% and 19b of the outer sleeve to be actuated longitudinally thereof in opposite directions to contract and retract the plates 8 and 10 and 9 and 11.

By loosening the set screws-20 the collars 21 may be moved along the outer sleeves 19 thereby to vary the distances between the plates thus enabling walls of difterent thicknesses with difierent Widths of cavities, to be moulded.

The construction of the transverse supports as above described has the advantage that an outer plate and the adjacent inner plate may be removed as shown in Fig. 4 to permit a single wall to be moulded. The mould is then adapted to function as a single unit. For this purpose one outer plate and the adjacent inner plate and the other outer plate and adjacent inner plate are ganged together by rods 16 which pass through the inner sleeves 17 and are secured by the nuts 18. Furthermore, in the event that it should be desired to construct a single wall with a cavity, such as in locations where a building has previously been erected and a cavity wall is required, one only of the outer plates may be removed. To facilitate the use of the mould as a single unit the sleeve 17 may be formed in two sections, as shown in Fig. 6 thus permitting one section and the attached collars, brackets and plates to be removed from the mould by simply unscrewing the nuts 18 and withdrawing the rods 16. To connect the two sections of the sleeve 17 together when a full cavity wall is to be constructed, the abutting ends of each section are provided with projections 25 and corresponding keyways 26 which interlock to form the complete inner sleeve.

If so desired, means such as the seals 25a may be associated with the transversesupports to prevent dirt from penetrating into the screw threads.

To support the mould after the first course has been moulded and to enable it to travel along a course, section by section, as the sections are moulded tracking means comprising the side rails or tracks 27 are provided. These side rails have flanges 27 adapted to rest upon a course of the wall previously constructed and are adapted to be secured to the mould by brackets 28 so that both mould and rails may be drawn forward as a unit along In order to turn the inner sleeve 17" the previous constructed course, in the completion of a moulding operation. The brackets 23 are secured to the sides of the mould by screws 29 which pass through holes 28a in the brackets 28 and are screwed into tapped holes 29a in the sides of the mould as best shown in Figs. 1 and 5. Each bracket 2% and associated rail 27 are hingeably connected together by a hinging rod 39 which is secured to the rail and which passes through a slot 31 formed in the bracket 28. To secure the bracket and rail rigidly one to the other the hinging rod .38 is jammed at the top of the slot 31 by a clamping screw 32. When the clamping screw 32 is loosened the hinging rod 39 will drop to the bottom of the slot, the rail drops and is permitted to swing free of the mould plate thus enabling the mould to be lifted vertically when required. To permit the level of the mould to be adjusted the rail is formed in two parts 27a and 27b which are vertically adjustable with respect to each other by screw operated cams 270 one of which is illustrated in perspective in Fig. 1 and in cross section in Fig. 4.

In order to overcome any difliculty due to a tendency of the mould to stick to the moulded section when a section of the course has been moulded, plunger plates 34 are provided. As shown more clearly in Fig. 3 each plunger plate comprises an end plate 34a and a bearer plate 35. Connected to the bearer plate 35 is a plunger pin 36 and a guide pin 37 which project through holes formed in the end plate 34. In the moulding of a course the plunger plates are connected to the mould by pins 38 which pass through holes 39 in the plunger plates and corresponding holes formed in the mould as illustrated in Figs. 6 and 7 of the drawings. When a section of the course has been moulded the mould is retracted. By pulling the handles 42 (hereinafter described) with the fingers and pressing on the plunger pins 36 with the thumbs as shown in Fig. 7 of the drawings, the bearer plates 35 bear against the end of the section and the mould is pulled along the course a distance substantially equal to the length of the plunger pins.

To construct the corners of the building right hand and left hand side plates 40 and 41 are provided. These plates are connected to the outer plates of the mould by handles 42, one of which is shown in Fig. of the drawings. To form the cavity at the corner, a core 43 is provided. The core is attached to the mould by pins 44 and 45. An end plate 46 which is attached to the side plates 40 and 41 by pins 47 and 48, closes the end of the mould.

To provide a key for an internal cross wall a dovetail core piece 49 is provided.

In the operation of the mould above described for the construction of a cavity wall section by section and course by course the two parts of the wall are formed between an outer plate and the adjacent inner plate. The space between the pair of inner plates thus becomes the cavity of the Wall. By suitably arranging the collars 21 on the outer sleeve 19 the outer plates may be adjusted to construct the two parts of the wall with difierent thicknesses. This will permit a ledge to be formed inside the building to provide a support for door bearers or the like as shown in Figure 2.

Having now described our invention, what W6 claim as new and desire to secure by Letters Patent is:

1. A mobile mold for the construction of buildings, section by section and course by course, comprising a pair of outer forms and a pair of inner forms for moulding a section of a course, a plurality of transverse supports for supporting and adjustably retaining the said forms in spaced relationship, the said transverse supports each including an inner sleeve and an outer sleeve, the individual sleeves on each transverse support having a plurality of sections and being operatively connected together by a plurality of left handed and right handed screw threads, means for actuating the sleeves on the said transverse supports to contract the said forms for molding a section of a course and to retract the said forms to permit the mold to be withdrawn from the said section after it has been molded, and means for disassembling an outer form and the adjacent inner form from the mold as a unit for molding a single wall, and for gauging the unit to the mold for molding a cavity Wall. 7

2. A mobile mold according to claim 1 wherein the forms are attached to the outer sleeve by a plurality of collars and brackets which are adjustable longitudinally on the said outer sleeve thereby to vary the distance between the forms to permit walls of different thicknesses to be molded.

3. A mobile mold for the construction of buildings, section by section and course by course, comprising a pair of outer forms and a pair of inner forms for molding a section of a course, a plurality of transverse supports for supporting and adjustably retaining the said forms in spaced relationship, the said transverse supports each including an inner sleeve and an outer sleeve, the individual sleeves on each transverse support having a plurality of sections and being operatively connected together by a plurality of left handed and right handed screw threads, operating levers secured to each inner sleeve for turning the inner sleeves to cause adjacent sections of the outer sleeves to be actuated longitudinally thereof in opposite directions to contract the said forms for molding a section of a course and to retract the said forms to permit the mold to be withdrawn from the said section after it has been molded, and means for disassembling an outer form and the adjacent inner form from the mold as a unit for molding a single wall and for ganging the unit to the mold for molding a cavity wall.

4. A mobile mold for the construction of buildings, section by section, and course by course, comprising a pair of outer forms and a pair of inner forms for molding a section of a course, a plurality of transverse supports for supporting and adjustably retaining the said forms in spaced relationship, the said transverse supports each including an inner sleeve and an outer sleeve, the individual sleeves on each transverse support having a plurality of sections and being operatively connected together by a plurality of left handed and right handed screw threads, and means for actuating the sleeves on the said transverse supports to contract the said forms for molding a section of a course and to retract the said forms to permit the mold to be withdrawn from the said section after it has been molded, the abutting ends of adjacent sections of the said inner sleeve having projections and corresponding keyways which interlock for forming the complete inner sleeve, with a rod passing through the said inner sleeve for gauging the said sections together, so that an outer form and the adjacent inner form can be disassembled from the mold as a unit for molding a single wall and can be ganged to the mold for molding a cavity wall.

5. A mobile mold for the construction of buildings, section by section and course by course, comprising a pair of outer forms and a pair of inner forms for molding a section of a course, a plurality of transverse supports for supporting and adjustably retaining the said forms in spaced relationship, the said transverse supports each including an inner sleeve and an outer sleeve, the individual sleeves on each transverse support having a plurality of sections and being operatively connected together by a plurality of left handed and right handed screw threads, means for actuating the sleeves on the said transverse supports to contract the said forms for molding a section of a course and to retract the said forms to permit the mold to be withdrawn from the said section after it has been molded, means for disassembling an outer form and the adjacent inner form from the mold as a unit for molding a single wall, and for gauging the unit to the mold for molding a cavity wall, and tracking means for supporting the mold upon, and permitting it to travel along, a previously molded course as the said sections are molded, the said tracking means comprising supporting portions for resting on a previously moulded course, a plurality of tracks and a plurality of brackets and screws for securing the tracks to the mold.

6. A mobile mold according to claim 5, wherein each bracket and associated track are hingeably connected together by a hinging rod which is secured to the track and which passes through a slot formed on the bracket and is secured therein by a clamping screw, so that when the clamping screw is loosened, the hinging rod will drop to the bottom of the slot to permit the track to drop and swing free of the mold to enable the mold to be lifted upwardly from a section when required.

7. A mobile mold according to claim 5 wherein each track is formed in two parts which are adjustable lengthwise with respect to each other by screw operated cams to permit the level of the mold to be adjusted.

8. A mobile mold for the construction of buildings, section by section and course by course, comprising a pair of outer forms and a pair of inner forms for molding a section of a course, a plurality of transverse supports for supporting and adjustably retaining the said forms in spaced relationship, the said transverse supports each including an inner sleeve and an outer sleeve, the individual sleeves on each transverse support having a plurality of sections and being operatively connected together by a plurality of left handed and right handed screw threads, means for actuating the sleeves on the said transverse supports to contract the said forms for molding a section of a course and to retract the said forms to permit the mold to be withdrawn from the said section after it has been molded, means for disassembling an outer form and the adjacent inner form from the mold as a unit for molding a single wall, and for gauging the unit to the mold for molding a cavity wall, and means comprising at least one plunger plate for separating the mold from a section of a course after it has been molded, each said plunger plate including an end plate and a bearer plate, a plunger pin and a guide pin which are connected to the bearer plate and which project through holes formed in the end plate so that, when the plunger pin is pressed the bearer plate bears against the end of the said section and the mold will be propelled along the course a distance substantially equal to the length of the plunger pin.

9. A mobile mold for the construction of buildings, section by section and course by course, comprising a pair of outer forms and a pair of inner forms for molding a section of a course, a plurality of transverse supports for supporting and adjustably retaining the said forms in spaced relationship, the said transverse supports each including an inner sleeve and an outer sleeve, the individual sleeves on each transverse support having a plurality of sections and being operatively connected together by a plurality of left handed and right handed screw threads, means for actuating the sleeves on the said transverse supports to contract the said forms for molding a section of a course and to retract the said forms to permit the mold to be withdrawn from the said section after it has been molded, means for disassembling an outer form and the adjacent inner form from the mold as a unit for molding a single wall, and for gauging the unit to the mold for molding a cavity wall, and means for constructing the corner of a cavity wall comprising a left hand side plate, a right hand side plate, a core for attachment to the mold, and an end plate for attachment to the said side plates.

References Cited in the file of this patent UNITED STATES PATENTS 1,101,484 Clark June 23, 1914 1,132,460 Dewey Mar. 16, 1915 1,176,525 Decks Mar. 21, 1916 1,374,199 Greene Apr. 12, 1921 1,390,066 Troolin Sept. 6, 1921 1,559,443 Lanning Oct. 27, 1925 2,449,725 Slater Sept. 21, 1948 2,506,716 Finnemore May 9, 1950 

